Plastic nailing composition



May 31, 1932. J. A. WIRES PLASTIC NAILING COMPOSITION Filed June 8. 1929 Agr..-

Patented May 31, 1932 UNITED STATES PATENT oFFlcE JOHN A. WIRES, OF CHICAGO, ILLINOIS, ASSIGNOR Ty THE NATIONAL KELLASTONE rj COMPANY, OF CHICAGO, ILLINOIS, A CORLPORATION OF :DELAWZl-kIREV I PLASTIC NAILING COMPOSITION- Applicaton filed .Tune 8, 1929. Serial No. 369,385.VV e

This invention relates to 'improvements in plastic nailing compositions and it consists of matters hereinafter described and more particularly pointed out in the appended claims.

Q The primary object of the invention is to provide a plastic composition which after hardening, will receive the smaller nails or tacks driven thereinto without splitting or cracking.

Another object of the invention 1s to provide a composition which will adhere to cementitious or like surfaces whereby certain covering for said surfaces may be nailed or tacked in place thereon.

Still a further object of the invention is. to provide a composition of this kind by which a strip may be conveniently formed at .the junction of a concrete or like floor and a building wall, which strip will not only .seal'oif 20 the usual draft inducing crevices at this point,

but willreceive and hold the smaller nails or tacks by which a ioor covering such as a ca rpet may be secured at its margins to said strip to cover said fioor. B These objects of the invention, as well as others together-with the many advantages thereof will more fully appear as I proceed with my specication.

In the drawings Fig. l is a perspective sectional view of the junction of a concrete floor and a building wall, showing in one part thereof a nailing strip made in accordance with my invention and showing in another part thereof the manner in which the nailing strip is produced.

Fig. 2 is a detail sectional view through adjacent wall and floor portions with one form of my improved nailing strip in place thereon and having secured thereto, the marginal parts of a carpet and lining therefor.

Fig. 3 is a view similar to Eig. 2' showing a slightly modified form of nailing strip for the marginal part of a carpet wherein no lining is employed. l

Referring now in detail to the ingredients employed in my improved composition which in a plastic state is of about the consistency of a substantially heavy first coat plaster, I

employ powdered magnesite and mix the same dry with ordinary wood sawdust. In proportion I employ byfweight approximately one and one-half times as much of the magnesite as sawdust; for example, 30 lbs. of magnesite to 20 lbs. of sawdust. I then add there to about four times as much sand as there is sawdust and by weight I find that lbs. of sand makes a good proportion. y

To provide a binder for the ingredient thus far set forth when'the same is reduced to aV plastic state by the addition of a suitable liquid, I add thereto, asbestos fibers in wool form to an extent approximating in weight about one-fourth of that of the sawdust. Thus about 5 lbs., of such asbestos iiber is added to the sawdust, magnesite and sand. These are all thoroughly intermixed togetherV prefer` ably before adding liquid which reducesithe mass to plastic form.

To reduce the mixed ingredients just above mentioned, to a plastic mass, I add thereto suiiicientvr chloride of magnesium having a specific gravity of about 20 as disclosed by a Baume hydrometer and thoroughlymix the same with said ingredients vuntil the plastic mass has the consistencyof a substantially heavy first coat plaster. In the mass, the sawdust `not only acts to give body .thereto but acts in conjuction with the asbestos fibers Y to bind the mass'together. Upon hardening the composition will I receive nails driven thei'einto without cracking and breaking'up into chips. V 4

My improved composition Ais especially adopted for use inV providing strips upon concreterand like floors to receive tacks or nails by which suitable fio'or coverings, such as carpets and linoleums may be secured against'movement upon such floors.

In Fig. 1I have illustratedithe mannerin which I form upon aconcrete or like` floor l adjacent a building wall 2, a strip 3 to which y a floor covering andany suitable kind maybe tacked or nailed. In` forming such a nailing strip, I laj a guide strip 4 of wood upon the fioor, spaced a suitable distance from and extending parallel with said wall. This 2f i A 1,860,917

While in a plastic state as indicated at 6 in Fig. 1.

Thereafter with a strike off tool ,8 having a portion so engaged With the guide strip as to he guided thereby, I strike off the eXcess 'composition to leave a strip 9 upon the floor,

a part of which engages the Wall. Such a strip which is bevelled at 10 on its top surface along that margin spaced from the Wall, effectively adheres to the Wall and floor upon setting seals up the crevice at the unction of said floor and wall.

In laying a carpet 11 upon the floor, Which carpet is of the kind requiring a pad or lin ing 12, the lining is 'just laid upon the Hoor y and the carpet is disposed thereon, with the superposed margins thereof covering the nai1- ing strip 9. Thereafter tacks or nails 18 are driven through said margins and into the Vnailing strip Which receives them in the manner of Wood. a

In Fig I have shown a nailing strip 9a for a thicker and heavier carpet 11EL that requires 4no lining. Under such circumstances, the hevelled surface 10a is of a lesser angle so that no ridge or Wrinkle Will appearin the laid carpet Where it lea-ves the strip to engag the floor.

A nailing strip' formed fromy my improved lcomposition is not only frepr'oof, but seals the usual junction crevice hetvveen floor and Wall sothat no draft can issue through said Wall under suction to soil the Wall and its finishings, nor can vermin pass from one room to the other through said junction crevice. It

adheres quite effectively to a concrete surface and will take all nails and tacks Within rea-V son, driven thereinto much in the manner of Wood.

`While in setting forth my invention, I have referred in detail to the ingredients as Well as to the proportions thereof and have described the compositon as employed as a nailing strip for carpets, the saine is tobe considered merely as illustrative so that I do not Wish to be limited thereto except as may be pointed out in the appended claim.

I claim as my invention n Y A'Composition carpet-tacking strip cementitiously adhered to a nail-impenetrable floor and ypositoned against the Wall, and:r comprising a` set mixture of the reaction products of magnesite 'and kmagnesium chloride together with bodying material of saw-dust and sand, said compositionsealing the joints between the floor and Wall.

Y In testimony whereof, I ha'vehereunto set my hand, this 4th day of June, 1929.V

JOHN A. WIRES. 

